DeepSeek V3 (March 2024) vs Claude Opus 4

Compare DeepSeek V3 (March 2024) by DeepSeek against Claude Opus 4 by Anthropic, context windows of 128K vs 200K, tested across 35 shared challenges. Updated April 2026.

Which is better, DeepSeek V3 (March 2024) or Claude Opus 4?

DeepSeek V3 (March 2024) and Claude Opus 4 are both competitive models. DeepSeek V3 (March 2024) costs $0.14/M input tokens vs $15/M for Claude Opus 4. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between DeepSeek V3 (March 2024) and Claude Opus 4

DeepSeek V3 (March 2024) is made by deepseek while Claude Opus 4 is from anthropic. DeepSeek V3 (March 2024) has a 128K token context window compared to Claude Opus 4's 200K. On pricing, DeepSeek V3 (March 2024) costs $0.14/M input tokens vs $15/M for Claude Opus 4.

Our Verdict
Claude Opus 4
Claude Opus 4
DeepSeek V3 (March 2024)
DeepSeek V3 (March 2024)Runner-up

No community votes yet. On paper, Claude Opus 4 has the edge — newer, bigger context window.

DeepSeek V3 (March 2024) is 268x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Claude Opus 4 uses 3.5x more transitions

DeepSeek V3 (March 2024)
Claude Opus 4
58%Vocabulary64%
18wSentence Length62w
0.73Hedging0.52
7.5Bold4.4
7.6Lists9.1
0.26Emoji0.11
1.60Headings1.87
0.08Transitions0.27
Based on 16 + 16 text responses
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DeepSeek V3 (March 2024)Claude Opus 4

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

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